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Topic: Brahmagupta
Replies: 4   Last Post: Dec 3, 1999 5:10 AM

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Sherman Stein

Posts: 35
Registered: 12/3/04
Re: Brahmagupta
Posted: Dec 2, 1999 1:13 PM
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Here are some references related to Indian development of the series for
arctan.
C. T. Rajagopal, "A neglected chapter of Hindu mathematics" Scripta
Mathematica 15 (1949) 201-209

... and T. V. Vedamurthi, "On the Hindu proof of Gregory's series" ibid 17
(1951) 65-74

... and M. S. Rangachari, "On an untapped source of medieval Keralese
mathematics" Archive for History of Exact Sciences 18 (1977) 89-102

S. Stein, "Strength in numbers", Wiley 1996 (The final chapter presents
the Indian method for arctan x in the special case, x = 1, hence the
Leibniz-Gregory series.)

S. Stein





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